<!DOCTYPE html>
<html>
    <head>
        <title>calculate </title>
        <meta charset="UTF-8">
        <style>
            table{border: solid 1px #bcbcbc; }
            td{border: solid 1px #bcbcbc;
padding: 10px;}
.myButton{width: 40px;
height: 40px;
padding: 10px;
text-align: center;
line-height: 40px;
background-color: #dedede;
border: solid 3px #bebebe;
font-size: 2em;
user-select: none;
cursor: pointer;}
        </style>
    </head>
    <body>
        <div>bimbimpimpim</div>
        <table>
        <tr>
                <td colspan="3"></td>
                
            <td> <div class="myButton">C</div></td>
        </tr>
        <tr>
            <td>
                <div class="myButton">1</div>
            </td>
            <td>
                <div class="myButton">2</div>
            </td>
            <td>
                <div class="myButton">3</div>
            </td>
            <td>
                <div class="myButton">+</div>
            </td>
        </tr>
        <tr>
            <td>
                <div class="myButton">4</div>
            </td>
            <td>
                <div class="myButton">5</div>
            </td>
            <td>
                <div class="myButton">6</div>
            </td>
            <td>
                <div class="myButton">-</div>
            </td>
        </tr>
        <tr>
            <td>
                <div class="myButton">7</div>
            </td>
            <td>
                <div class="myButton">8</div>
            </td>
            <td>
                <div class="myButton">9</div>
            </td>
            <td>
                <div class="myButton">*</div>
            </td>
        </tr>
        <tr>
            <td>
                <div class="myButton">0</div>
            </td>
            <td>
                <div class="myButton">.</div>
            </td>
            <td>
                <div class="myButton">=</div>
            </td>
            <td>
                <div class="myButton">/</div>
            </td>
        </tr>
        </table>
    </body>
</html>